Pile-driver.



H. M. FERGUSON.

PILE DRI VER. APPLIOATION FILED DEG.13, 1913.

PD 1 9 T Jim 6 1% am M M m 2 t n e t a D1 J2 Fawn-son,

H. M. FERGUSON.

PILB DRIVER.

APPLICATION FILED DEC. 13, 1913.

1,1 32,321 Patented Mar. 16, 1915.

2 SHEETS-SHEET 2.

UNTTED STATES ATENT FFCE.

HENRY 1VL FERGUSON, OF NEW ORLEANS, LOUISIANA.

FILE-DRIVER.

Application filed December 13, 1913.

To all whom it may concern:

Be it known that I, HENRY M. FERGUSON, a citizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented new and useful Improvements in Pile-Drivers, ofwhich the following is a specification.

The invention relates to an improvement in pile drivers, and moreparticularly to a base therefor mounted for adjustment to form aneffective operation of the driver without regard to its position withrespect to the horizontal center line of the sheet piling so long as thevertical center line of the driver and pile are in vertical alinement.

The main object of the present invention is the provision of a base forpile drivers in which the driving head is mounted for rotative movementwithin the base so that it may be turned to a proper position foreffective cooperation with the sheet piling without regard as to whetherthe main body of the pile driver has the center horizontal line of thedriving head and sheet piling in alinement thereby permitting, forexample, the operation of the pile driver for driving sheet piling onboth sides of the excavation without the necessity of shifting the piledriver as a whole.

The invention in the preferred form of details will be described in thefollowing specification, reference being had particularly to theaccompanying drawings, in which Figure 1 is a perspective viewillustrating the improvement. Fig. 2 is an elevation partly in sectionof the same, the driving head being shown at its lowest position. Fig. 8is a similar View partly broken ofi with the driving head shown in itselevated position. Fig. 1 is a section on line H of Fig. 1. Fig. 5 is asection on line 55 of Fig. 1. Fig. 6 is a bottom plan of the head. Fig.7 is a view similar to Fig. 3, showing the modified form of head.

In the accompanying drawings, the improvement is shown as applied to theordinary type of steam pile driver hammer, wherein 1 represents thesteam cylinder for actuating the plunger 2 through the medium of thepiston rod 3, the plunger being mounted upon guide rods 4: dependingfrom the frame 5 supporting the cylinder.

The improved base comprises a metallic section 6 centrally formed withan openmg Specification of Letters Patent.

Patented Mar. 16, 1915..

Serial No. 806,560.

7 extending entirely through the base, the upper portion of the openingbeing of a size to receive the driving projection S from the plunger 2,the lower portion of the opening being circumferentially enlarged as at9. At appropriate points, the base is formed with circular recesses 10in which the lower ends of the guides 1 are fitted and secured by pins11 passing through the base and through the guides, the pins beingreadily removable to permit the disconnection of the base when desired.Slidably mounted in the enlarged portion. 9 of the opening 7 isa drivingdisk 12, designed to directly receive the impact of the plunger.

The. improved head comprises a driving section 13 from which rises areduced cylindrical section 1 1 having a diameter corresponding to thatof the portion 9 of the opening 7, a further reduced section 15 risingfrom the section 14 and being provided on its upper end with a disk head16 slidably fitting the portion 9 of the opening and having its uppersurface of slight conical formation to provide a central raised point 17to receive the impact of the disk 12. By this means the impact of thedisk is transmitted evenly and squarely to the head. The head isprevented from separation from the base by means of lock bars 18 passingthrough the head and through the space of the opening 9 beyond thereduced body portion 15 of the head, whereby said lock bars will beengaged by the disk 16 and the head thereby prevented from completeseparation from the base. The driving section 13 of the head is formedin its bottom operative surface with a driving recess 19, the side wallsof which throughout the central portion thereof are upwardly andinwardly convergent, terminating in a narrow space 20 centrally of thebottom of the driving section to receive and center the head withrespect to the sheet piling being driven. Beyond the space 20, the wallsare outwardly flared in bottom plan. This construction insures a propercooperation of the driving section with the sheet piling and compels themaximum efficiency of the blow.

As will be apparent from the above description and drawings, the head asa whole is freely rotatable in the base and the driving section 13 ispreferably provided with an annular series of openings 21 for theinsertion of the suitable instruments for turning the head in the baseto adjust the centering opening in the driving section with relation tothe particular piling being driven.

The base 6 is preferably provided with diametrically disposed channels22 to receive channel irons 23 which may if desired seat in similarrecesses 1n the plunger and extend the full length of the structure, the

channel irons serving to fit between the pile driver guides on the fixedframe. By means of the length of these channel guides, the device as awhole may be lowered for a considerable distance below the fixed frame,and1 henceincrease its operative length at wil In Fig. 7 I have shownthe identical construction except that in this instance the permits anadjustment of the head proper to efiectiv'ely cooperate with the pilingwithout regard to the position of the main por- Copies 01 this patentmay be obtained for 'ment with the piling.

tion of the pile driver'so long as said main portion is in approximatelyvertical alineis claimed is v 1; A base for pile drivers including asection formed with a longitudinally extending opening to receive thedrivingelement, a head freelyrotatable in said opening and having aportion of less diameter than the opening, locking pins passed throughthe base and seated in the opening adjacent the reduced space ofjthehead, and a driving disk freely movable in the opening and arrangedabove the head. V

2. A base for pile drivers including a section formed with alongitudinally extending opening to receive the driving element, a headfreely rotatable in said opening and having a portion of less diameterthan the opening, locking pins passed through the. base and seatedin-the opening adjacent the reduced space of the head,- and a'drivingdiskfreely movable inthe opening and arranged above the head, the upperend-of the head being of conical formation to pre sent a centralimpactpoint beneath the disk, In testimony whereof I aflix "my signaturein presence'oftwo witnesses. r

I HENRY M. FERGUSON, Witnesses: i 1

Henry F RIOKE, V

- JAMES Gr; Lnn.

five cents each, by addressing 'the Commissioner of 2ate1ts,.Washington, D. 0.

